Chapter 4:
Storage
In this chapter
Türkiye has a larger battery project pipeline than EU countries
Since 2022, a total of 33 GW of capacity has been allocated to new wind and solar power plants with storage in Türkiye. As these new plants are required to install battery capacity equal to their own capacity, this has resulted in a rapid expansion of battery projects. Türkiye now has one of the largest battery project pipelines in Europe, surpassing even countries with higher wind and solar capacity.
4.1
A 33 GW battery project pipeline
Toward the end of 2022, Türkiye introduced a regulation allowing grid capacity allocation for new wind and solar plants without the need for tenders or auctions. Under this scheme, projects are required to include battery capacity at least equal to the plant’s installed capacity.
Despite this battery requirement, limited grid capacity allocated for tenders and self-consumption projects led to a record 221 GW of applications within just a few months. Of these, 33 GW have been approved so far. Accordingly, these projects have created at least 33 GW of battery capacity.
Türkiye’s battery project pipeline has reached 33 GW, exceeding that of any European Union (EU) country. Germany and Italy—the next largest—are at around 12–13 GW each, including operational capacity and project pipelines.
As of the end of 2025, Türkiye’s total installed wind and solar capacity reached 40 GW. Therefore, the 33 GW battery project pipeline corresponds to 83% of the country’s existing wind and solar capacity.
Among EU countries, only Romania has a higher ratio of battery capacity (operational plus pipeline) to existing wind and solar capacity, at 89%. Other countries, such as Belgium, Italy, and Poland, have ratios around 52–53%, while Germany stands at 12% and the Netherlands at 18%.
4.2
Globally, batteries average 2.5 hours of storage
Türkiye has one of the largest battery pipelines in Europe (33 GW), but most projects have short storage durations of around one hour, limiting their support to the country’s power system. The current total storage capacity of licensed and pre-licensed wind and solar projects with storage is 37 GWh, corresponding to an average duration of 1.1 hours.
However, global trends show that one-hour batteries are uncommon. Global battery capacity has reached 267 GW / 610 GWh, with average storage duration increasing each year. In 2025, global battery installations totalled 104 GW / 257 GWh, corresponding to an average duration of 2.5 hours.
While in Türkiye, the criteria applied for storage-integrated wind and solar projects have led investors to favour one-hour storage durations.
As a result, the Turkish 33 GW pipeline not only diverges from global trends but also from the country’s long-term targets. Türkiye’s 2035 battery capacity target is set at 7.5 GW with a two-hour storage duration.
As of February 2026, 208 MW of storage-integrated wind and solar projects have been commissioned in Türkiye. Since the regulation was first introduced in 2022, grid-scale battery installation costs have fallen by more than 50%, making projects financially viable under current electricity market prices. As the first pre-licenses began to be issued three years ago, this large project pipeline is expected to start materialising—or being reduced through cancellations—from 2026 onward.
